Casper l



(No Model.)

G. L. REDPIELD. TYPE DIE POR MATRIX MACHINES.

Patented June 10, 1890.

UNITED STATES PATENT CEEICE.

CASPER L. REDFIELD, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE CHICAGO MATRIX MACHINE COMPANY.

TYPE-DIE FOR MATRIX-MACHINES.

SPECIFICATION forming part of Letters Patent No. 429,865, dated June- 10, 1890.

Application led February 17, 1890. Serial No. 340,688. (No model.) i

To all whom it may concern:

Be it known that I, CASPER L. REDFIELD, a citizen of the United States, residing at Chicago, in. the county of Cook and State of Illinois, have invented certain new and useful Improvements in Type-Dies for Matrix-Making Machines, of which the following is a speciiication.

My invention relates to type-dies for matrixmaking machines, and to means for accurately guiding the dies while impressions are being made. I

The object of the invention is to provide convenient devices for securing the type-dies in the exact positions required in their carrying-frame and for guiding them in operation to prevent any lateral or torsional movement. This object is accomplished by means of the devices illustrated in the accompanying drawings, in which- Figure 1 represents a side elevation of a die secured in its frame in position to be impressed into a matrix-body. Fig. 2 shows in like elevation the die in its depressed position with the face impressed into a matrixbody. Fig. 3 is an elevation, partly sectional, showing the manner of holding the guide-pin and of securing the type-die to the shank; and Fig. el is a plan View showing the bushing and its guide-h oles for the die-head and guide-pin, respectively.

In such drawings, 1 and 2, respectively, designate the upper and lower plates of a diecarrying frame adapted to be moved laterally over a matrix-body 3,which is supported on an anvil el. Intermediate the die-carrying frame and the matrix-body is a plate 5, in which is inserted a hardened-steel bushing 6, having a countersunk guide-hole 7 at the printing-point for guiding the die to the matrix-body. A little to one side of the guidehole is a second smaller countersunk guidehole S for receiving and guiding a pin 9.

10 is a die-body held in the die-carrying frame 1 and 2, by means of a shank 11. The shank has a collar 12 directly beneath the upper plate 1 of the die-carrier, and a spring 13, bearing against this collar, seating on the lower plate 2, serves to hold the typedie in its elevated position. The lower end of the shank 11 is turned smaller than the main port-ion and is screw-threaded. This screw-threaded portion le is secured firmly into the die-body 10, the shoulder 15, formed ou the shank, fitting into a corresponding counterbore in the die-body. The type-face is formed on a smaller projecting portion 16 of the die-body. A lug 17 is provided'at one side of the die-body 10, in which the pin 9 is secured. vThe shank 11 and the upper por- 6o tion of the pin 9 lit loosely in the die-carrying frame 1 and 2, so as to permit the die to be easily depressed and to turn slightly. The lower ends of the die-body 10 and of the pin 9 are suitablybeveled to fit accurately in 65 their guide-holes 7 and 8, so that upon depression of the die it is brought into the exact position desired and held firmly from turning or lateral displacement. The taper at the lower ends of the die-head and guide-pin and 7o the countersinks in their guide-holes enable them to find their proper final positions7 even though at the time of depression they may be slightly turned or laterally displaced.

The bushing 6 maybe pressedinto the plate 7 5 5 and hold its position by friction; or it may be put in loosely and fastened by screws after it is adjusted to its proper position. Whatever method is employed for securing it, it is desirable to have the bushing so made 8o and secured that it may be adjusted to its proper position after the plate 5 is in the machine. The die may be depressed by a plunger 1S, operated in any well-known manner.

Patentable features of invention relative to 8 5 the die supporting and centering devices disclosed and not herein claimed are part of the subject-matter of prior applications for patents by me, to Wit: Serial No. 300,536, led Feloruary 20, 1889, and Serial No. 305,567, filed 9o April 1,1889, in which claim is made to them.

1. A type-die having connected thereto a guide-pin parallel to its axis, both ends of said pin being arranged to serve as guides for the die, substantially as set forth.

2. In a matrix-machine, a plate overlying the matrix-body and providing centering-apertures for a die and a pin, in combination with a die-body carrying a guide-pin, sub- Ioo stautially as set vforth.

3. The combination, with a type-die car rier, of it type-Shank supported in said earrier, a die-head carried thereon and carrying a pin guided in said carrier, und a plate overlying the matrix-body, having guide-holes for Suid die-head und said pin, substantially as set forth.

4. In combination with t die-curryin g freine and type-dies carrying guide-pins guided therein, :t plate overlying the matrix-body, providing apertures that have countersunk openings for Suid dies and pins, substantially as set forth.

5. The combination, with t die-carrier and reeiproeatiinq dies and :t plante providing1 t centering-aperture at the printing-point, of a guide-hole at the side of the centering-aper- 

